Ink cartridge



FIG. 1 is a front elevation view of my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a rear elevation view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a top perspective view thereof;

FIG. 8 is a bottom perspective view thereof; and,

FIG. 9 is another top plan view thereof without the environment covering the claimed design.

The broken lines are for illustration only and form no part of the claimed design. 

The ornamental design for an ink cartridge, as shown and described. 